import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

public class CoverGenerator {

    public static void generateCover(String name, String outputPath) {
        // A4纸的分辨率 (300 DPI)
        int width = 2480;
        int height = 3508;

        // 创建一个空白图片
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = image.createGraphics();

        // 设置奶黄色背景颜色
        Color paleYellow = new Color(255, 253, 208);
        g2d.setColor(paleYellow);
        g2d.fillRect(0, 0, width, height);

        // 设置字体样式为楷书风格，颜色为红色
        g2d.setFont(new Font("楷体", Font.BOLD, 200));
        g2d.setColor(Color.RED);

        // 测量名字的宽度和高度，以便居中显示
        FontMetrics fm = g2d.getFontMetrics();
        Rectangle2D rect = fm.getStringBounds(name, g2d);

        // 计算名字的起始位置
        int x = (width - (int) rect.getWidth()) / 2;
        int y = height / 4 + fm.getAscent();  // 将名字放置在高度的1/4位置

        // 绘制名字
        g2d.drawString(name, x, y);

        // 释放资源
        g2d.dispose();

        try {
            // 将图片保存到指定路径
            ImageIO.write(image, "png", new File(outputPath));
            System.out.println("封面生成成功：" + outputPath);
        } catch (Exception e) {
            System.err.println("封面生成失败：" + e.getMessage());
        }
    }

    public static void main(String[] args) {
        // 示例调用
        generateCover("Java 大佬", "C:\\Users\\Administrator\\Desktop\\cover.png");
    }
}